Fault Codes/Generac/SHUTDOWN SWITCHGeneracSHUTDOWN SWITCHUnclassifiedSensorsWhat This Code MeansUnit will not start; Flashing red LED illuminatedPossible Causes•Emergency shutdown switch is openSuggested Actions1Check emergency shutdown switches2Clear alarm3Set emergency shutdown switch(es) to CLOSED (I)Related Generac Fault CodesP03000032010031190031180024936-66-56-46-36-24-44-3Browse all Generac fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for SHUTDOWN SWITCH on your specific Generac unit — cited to the OEM manual, not a forum guess.TRY IT FREE